dawa, well, then we will never know. It seems as if noone else had problems, yet
One aim of yesterday's release was to fix the "Number of blocked IP ranges: N/A". So I was a bit surprised to hear of problems.
What's your distribution? What are your entries in /etc/apt/sources.list?
Please post your "dpkg --print-architecture".
I will check the repository then.
Meanwhile please try a "sudo aptitude update" again; perhaps somehting got lost.
EDIT: You may download the package manually: It's in http://moblock-deb.sourceforge.net/d...n/m/mobloquer/